Balanced speed reducer of variable line speed planetary row having double sun gears

    公开(公告)号:US11441641B2

    公开(公告)日:2022-09-13

    申请号:US17419288

    申请日:2019-12-27

    Applicant: Can Luo

    Inventor: Can Luo

    Abstract: A balanced speed reducer of a dual-sun gear variable-line-speed planetary row includes a dual-sun gear variable-line-speed planetary row, an input end, an output end, a locking end, and auxiliary devices such as bearings. The dual-sun gear planetary row includes a left sun gear, a right sun gear, and a planet carrier. A left planetary gear and a right planetary gear that are connected on each planetary gear shaft have the same rotation speed. The left planetary gear meshes with the left sun gear, and the right planetary gear meshes with the right sun gear. The number of gear sets is not less than two. A teeth number combination and a number of gear sets are set according to a range specifying parameter and following a principle of matching the teeth number combination with the number of gear sets.

    Ball screw
    3.
    发明授权

    公开(公告)号:US11174924B2

    公开(公告)日:2021-11-16

    申请号:US16608940

    申请日:2017-12-25

    Abstract: An end deflector includes a main portion including a ball delivery path that delivers balls between a rolling path and a ball return path, a tongue portion that guides the balls from the rolling path to the ball delivery path, and a pair of protruding pieces, that extend in the circumferential direction of each nut body from either side of the tongue portion with respect to the axial direction and define a ball guide groove that extends between the ball delivery path and the rolling path in cooperation with an inner circumferential surface of a deflector holding recess formed in a nut body, the main portion has an outer circumferential surface which opposes an inner circumferential surface of the deflector holding recess in the radial direction, a front-side portion of the outer circumferential surface with respect to a direction of insertion into the deflector holding recess is offset inward in the radial direction, and at least a rear-side portion of the outer circumferential surface with respect to the direction of insertion into the deflector holding recess is fitted to the inner circumferential surface of the deflector holding recess.

    Linear actuator
    6.
    发明授权

    公开(公告)号:US10094463B2

    公开(公告)日:2018-10-09

    申请号:US15552110

    申请日:2016-03-04

    Abstract: A linear actuator is disclosed having a housing and a plurality of components arranged in the housing. The actuator may include at least one conducting component, a group of mechanical, non-conducting components including components of a spindle mechanism, and at least one bearing arrangement designed to support components of the spindle mechanism in the housing. The at least one conducting component may be separated from the group of mechanical, non-conducting components by at least one seal in such a way that two mutually separate spaces sealed off from one another are formed within the housing.

    GEAR TRANSMISSION DEVICE
    7.
    发明申请

    公开(公告)号:US20180238421A1

    公开(公告)日:2018-08-23

    申请号:US15753229

    申请日:2016-10-03

    CPC classification number: F16H1/16 F16H27/04 F16H27/045 F16H27/08 F16H55/02

    Abstract: A gear transmission mechanism includes a second gear, a first gear forming tooth portions at an outer circumference of a sector-like gear body for meshing with the second gear, and a rotation restricting mechanism for setting a rotation limit of the first gear. The rotation restricting mechanism includes an abutment portion provided in the first gear and a stopper provided in the housing. At least one of an abutment face in which the abutment portion comes into abutment against the stopper and a stopper face in which the stopper comes into abutment against the abutment face includes an inclination portion for creating a component force from rotational force of the sector gear at the time of mutual abutment.

    Ball screw device and steering system

    公开(公告)号:US10030746B2

    公开(公告)日:2018-07-24

    申请号:US15600887

    申请日:2017-05-22

    Abstract: A ball screw device is provided, including a retainer that can properly retain balls. The difference between a diameter being the pitch circle diameter of the ball screw device and the outside diameter of the rack shaft is set to be equal to or larger than the difference between the bore diameter of a ball screw nut and the diameter. The thickness center diameter of the retainer is set to be smaller than the diameter. Even when the inclination angle is reduced, the clearance between the inclined surfaces of each retainer groove on the radial inside can be easily set to be smaller than the diameter of the balls because the bore diameter of the retainer is set to be smaller. Thus, even when the inclination angle of the inclined surfaces is set to be smaller, the balls can be properly retained.

    Circulating device for motion guide apparatus

    公开(公告)号:US09625017B2

    公开(公告)日:2017-04-18

    申请号:US13763750

    申请日:2013-02-11

    CPC classification number: F16H25/2214 F16H25/2233 Y10T74/19767

    Abstract: A motion guide device includes a ball nut attached onto a shaft and having helical grooves for receiving ball bearing elements, a ball circulating member is engaged with the ball nut and includes a ball circulating channel communicative with the helical groove of the ball nut, and includes an intermediate segment and two end segments, a ball coupler includes two flexible coupling members for engaging with the ball bearing elements, and the ball circulating member includes two opposite helical guide pathways for receiving the flexible coupling members of the ball coupler, and curved relative to the ball circulating member for smoothly guiding the flexible coupling members to move through the ball circulating member.

    Ball screw and assembling method thereof
    10.
    发明授权
    Ball screw and assembling method thereof 有权
    滚珠丝杠及其组装方法

    公开(公告)号:US09133921B2

    公开(公告)日:2015-09-15

    申请号:US14237306

    申请日:2012-08-01

    Abstract: To improve workability and sealing performance of a coolant when a plurality of nuts in a ball screw are brought into contact with one another, the plurality of nuts being coupled to one another, assembled to one threaded shaft and cooled by flowing the coolant through through-holes formed in the plurality of nuts in axial directions of the plurality of nuts. The ball screw includes counterbores of the through-holes formed on opposing end faces of both of adjoining nuts, and a ring-shaped sealing member inserted thereto. The counterbores are formed such that a depth of one counterbore is larger than a length of the sealing member, and the a depth of the other counterbore is smaller than the length of the sealing member, and such that circumferential positions of the counterbores of the adjoining nuts face each other when a desired preload is exerted.

    Abstract translation: 为了提高当滚珠丝杠中的多个螺母彼此接触时冷却剂的可操作性和密封性能,多个螺母彼此联接,组装到一个螺纹轴上并通过使冷却剂流过通孔而被冷却, 在所述多个螺母的轴向上形成在所述多个螺母中的孔。 滚珠丝杠包括形成在两个相邻螺母的相对端面上的通孔的沉孔和插入其中的环形密封构件。 沉孔形成为使得一个沉孔的深度大于密封构件的长度,另一个沉孔的深度小于密封构件的长度,并且使得邻接的沉孔的圆周位置 当施加所需的预载荷时,螺母彼此面对。

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